In a word: Durability. Modified Bitumen is known to be incredibly durable, and is extremely resistant to leaks because of its two-ply application. With a total thickness of around 8.0mm and staggered laps, this system is almost impervious to water. They are usually made from a combination of tar asphalt and either rubber or plastic, and they are extremely tough. They have a history of lasting for an extended amount of time and, provided you are getting regular seasonal inspections, you can expect this rooftop to perform and look great for years to come. Modified Bitumen might work for you, but to assess that, you’ll need an inspection from Warren Roofing®. Schedule your consultation today!